/Engine/Source/Runtime/Engine/Classes/Engine/Engine.h
Get an Engine Subsystem of specified type
[UEngineSubsystem](API\Runtime\Engine\Subsystems\UEngineSubsystem) * GetEngineSubsystemBase ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UEngineSubsystem](API\Runtime\Engine\Subsystems\UEngineSubsystem) > SubsystemClass ) const